<template>
  <!--  <el-breadcrumb class="app-breadcrumb" separator="/">-->
  <!--    <span class="no-redirect">{{ levelList }}</span>-->
  <!--    <transition-group name="breadcrumb">-->
  <!--      <el-breadcrumb-item v-for="(item,index) in levelList" :key="item.path">-->
  <!--        <span v-if="item.redirect==='noRedirect'||index==levelList.length-1" class="no-redirect">{{ item.meta.title }}</span>-->
  <!--        <a v-else @click.prevent="handleLink(item)">{{ item.meta.title }}</a>-->
  <!--      </el-breadcrumb-item>-->
  <!--    </transition-group>-->
  <!--  </el-breadcrumb>-->
  <div class="title">
    {{ title }}
  </div>
</template>

<script>
import pathToRegexp from 'path-to-regexp'

export default {
  data() {
    return {
      levelList: null,
      title: null
    }
  },
  watch: {
    $route() {
      this.getBreadcrumb()
    }
  },
  created() {
    this.getBreadcrumb()
  },
  methods: {
    getBreadcrumb() {
      // only show routes with meta.title
      let matched = this.$route.matched.filter(item => item.meta && item.meta.title)
      const first = matched[0]

      if (!this.isDashboard(first)) {
        matched = [{ path: '/dashboard', meta: { title: '首页' }}].concat(matched)
      }

      this.levelList = matched.filter(item => item.meta && item.meta.title && item.meta.breadcrumb !== false)
      const tempList = [...this.levelList] // 克隆数组以避免修改原数组
      const lastElement = tempList.pop()
      this.title = lastElement.meta.title
    },
    isDashboard(route) {
      const name = route && route.name
      if (!name) {
        return false
      }
      return name.trim().toLocaleLowerCase() === 'Dashboard'.toLocaleLowerCase()
    }
    // pathCompile(path) {
    //   // To solve this problem https://github.com/PanJiaChen/vue-element-admin/issues/561
    //   const { params } = this.$route
    //   var toPath = pathToRegexp.compile(path)
    //   return toPath(params)
    // },
    // handleLink(item) {
    //   const { redirect, path } = item
    //   if (redirect) {
    //     this.$router.push(redirect)
    //     return
    //   }
    //   this.$router.push(this.pathCompile(path))
    // }
  }
}
</script>

<style lang="scss" scoped>
.title {
  display: inline-block;
  font-size: 24px;
  line-height: 50px;
  font-feature-settings: "tnum";
  font-variant: tabular-nums;
  margin-left: 8px;
}

//.app-breadcrumb.el-breadcrumb {
//  display: inline-block;
//  font-size: 14px;
//  line-height: 50px;
//  margin-left: 8px;
//
//  .no-redirect {
//    color: #97a8be;
//    cursor: text;
//  }
//}
</style>
